Objectives. To create an inexpensive, simple, accurate, and noninvasive device to evaluate the character of a male’s urinary stream.

Methods. The results of a formal in-office uroflow study performed on 50 symptomatic men were compared with those of the same men using the Streamtest cup.

Results. All men with a urine flow of 12 mL/s or greater reached or exceeded the red line on the Streamtest cup. No patient whose stream was less than 11 mL/s was able to reach the red line.

Conclusions. Uroflowmetry is an excellent study in diagnosing, managing, and monitoring the treatment of urinary obstructive disease secondary to benign prostatic hyperplasia. The Streamtest cup can provide both the patient and the physician with a clinically accurate visual assessment of an individual’s urine flow at a significant cost savings over other testing means. The Streamtest cup when compared with a formal in-office uroflow study provided clinically similar results in separating obstructive uropathy from a normal urinary flow.